Why didn't the support structure for the tree work?

A major report by a reputable independent engineering bureau, JG Hagemans Ltd was requested by the Generali insurance to investigatethe matter and concluded that the welds of the construction connected to the deep set foundation were poorly made and substandard.

One welder who simply glanced at the construction and foundation immediately after the collapse of the tree could see the welds were bad. He was interviewed by NOS Radio 1 and said "It's absolutely clear: the welds were done by an amateur. Totally unprofessional, completely ridiculous!

The SAFT is holding the company who built the structure responsible.

In 2008 building the construction...

With the help of various construction companies in April 2008 the Foundation Support Anne Frank Tree built a structural support for the tree as was demanded by the municipality.